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Also I have been having a look around and it seems that the Mac Mini is having issues with this particular RAM. So it is defiantly not system specific, All problems seem to be reported quite recently which leads to believe its a "Bad Batch" over compatibility issue. Hopefully Corsair can shed some light on this. I will post their response when I receive.

I recieved a reply from Corsair - The advised me to shut system down and power on while holding the Control, Command + P and R keys. Hold these down until you hear the startup tones 3 times (This should reset the system BIOS)

I performed these steps with every different memory configuration possible to no avail. I got back to Corsair with the results and they advised (on the information that I provided that I replacement will be the best option.

I now have an RMA is process and am awaiting replacement dimms.

Hopefully this will resolve if not Kingston is the way to go, I will keep you posted.

Your computer can only see 3g of Ram. The older intel macbook pro has a limit of 3GB that can be used (the older MBP came with the Intel 945PM chipset that has this limitation), however,the newer Santa Rosa based MBP can have 4GB.

Your computer can only see 3g of Ram. The older intel macbook pro has a limit of 3GB that can be used (the older MBP came with the Intel 945PM chipset that has this limitation), however,the newer Santa Rosa based MBP can have 4GB.

The Santa Rosa came out in late 07 or early 08.

MB403LL/A macbooks support up to 4GB of RAM. nice try though.

it's because the Corsair units have an incorrect ICC profile loaded into them and are incompatible with the MacBooks. the SMC isnt able to identify them properly... but when you use the combination of the Corsair module with one of your stock modules, it works fine as the SMC relies on the ICC profile stored in the stock module to identify the modules loaded in the banks.

the lesson learned is to only buy RAM from shops that specialize in parts and support for Macs. try Other World Computing (www.owc.com), RAMJET Inc. - High Performance Mac Memory, or the *Apple* section on newegg. these suppliers test the modules for compliance prior to sale. their prices are also very competitive and they usually feature a lifetime guarantee.

it's because the Corsair units have an incorrect ICC profile loaded into them and are incompatible with the MacBooks. the SMC isnt able to identify them properly... but when you use the combination of the Corsair module with one of your stock modules, it works fine as the SMC relies on the ICC profile stored in the stock module to identify the modules loaded in the banks.

the lesson learned is to only buy RAM from shops that specialize in parts and support for Macs. try Other World Computing (www.owc.com), RAMJET Inc. - High Performance Mac Memory, or the *Apple* section on newegg. these suppliers test the modules for compliance prior to sale. their prices are also very competitive and they usually feature a lifetime guarantee.

Newegg is a good one!

I just bought the Mushkin Set 2x2GB. Funny thing was the set I bought was for PC (85$), and the APple set was 89$. The only difference in part number was the apple set had an "A" at the end. I took the chance and got the regular non-A set, and am Fine on my MBP.

I ended up returning the RAM to Corsair.... they were going to wait THREE WEEKS to return a good set. I escalated the issue and told them I did not want to go to litigation with the issue. Then they paid for my return shipping and sent the RAM back.